Landey
lvl.4
Germany
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If you know ND filters from regular photography, you know their purpose: reducing the light hitting the sensor to allow correct exposure in case you shoot in an environment where your fastest shutter setting isn't sufficient - and for getting that nice "soft water" effect by long-time exposure.
With a drone, it's a bit different: You've got a quite insensitive sensor with your Mini 2, so you won't need ND filters for exposure correction.
The filters are used to create motion blur for "more cinematic" looks by locking the exposure time in manual mode to 1/60 second (if you're recording 30 frames per second).
I've got a set of ND filters and gave them a quick try. To be honest: I didn't like the footage taken with an ND filter better than footage taken without. So I am not convinced of the "must have ND filter hype", but will give it another try today.
If you know someone with compatible ND filters, I suggest to try them out before you buy, to see if you really need them.
And: Anything you add to your Mini 2 will change it's characteristics more or less, will also affect air resistance and battery life. But it's insignificant given the weight of just below 1 g (just put one on my powder scale) and the shape of the filters causing no significant change of your Mini 2's silhouette and air resistance. Might be a bit different with ND filters with built-in polarizer.
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